It’s easy to let up on regularly checking your credit card purchases, especially if you’ve never had a problem before.

However, false or fraudulent charges can arise in various ways. A store accidentally charges you twice for a purchase or fails to process a return. Perhaps you signed up for a one-month trial subscription, and now you’re getting automatic monthly charges.

Fraud can take many forms. You could be the victim of a data breach, or a phishing email or phone call. A scammer could access your data over public Wi-Fi or steal your credit card information with a skimming device.

At the very least, you should check your monthly credit card statements, or check every week or two if that suits you. Also, you may want to sign up for alerts that many financial institutions offer. You can receive a text, email or app notification each time there’s a purchase on your card.